When sourcing traditional attire, the fabric composition determines both the retail value and durability. You should prioritize natural fibers like silk, high-grade cotton, or linen for authentic premium lines, or polyester-blend brocades for cost-effective mass-market versions. Ensure the supplier provides colorfastness certificates (Grade 4 or higher) to prevent bleeding, especially for vibrant ethnic dyes, and verify the fabric weight (GSM) to ensure the garment has the appropriate drape and opacity.